iFixit Launches Repair Guides for Retina MacBook Pro - MacRumors
Amazon.com: A1502 Replacement Laptop Battery for MacBook Pro Retina 13 Inch Late 2013 Mid 2014 Early 2015; MacBook Pro A1493 A1582 Battery EMC 2678 2875 2835 ME864 ME865 : Electronics
iFixit: New MacBook Pro has first 'DIY-friendly' battery replacement design since 2012 - 9to5Mac
Macbook Pro 15" A1398 Battery Replacement for Mid 2012-Early 2013 (Mod – iGadget
MacBook Pro (Retina, 15-inch, Mid 2012) - Technical Specifications
A1322 Battery for Apple MacBook Pro 13 inch A1278 (Mid 2009 - Mid 2012)
Amazon.com: A1382 Battery for MacBook Pro 15 inch A1286 Early 2011 Late 2011 Mid 2012 New Replacement Laptop Battery (7200mAh 10.95V/78.84Wh 25 Months Warranty) : Electronics